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Open Access Article
1 - The Effect of Knowledge Management on Entrepreneurial Behavior in Employees (Case Study: Municipal Employees of District 9 of Tehran)
hajieh rajabi farjad Niloufar Mirsepasi Hamidreza IsapurBackground: Rapid changes in the environment, the intensification of the competitive environment between companies and the increasing community expectations, shows the need for entrepreneurship for the survival of organizations, and knowledge management can play a signi MoreBackground: Rapid changes in the environment, the intensification of the competitive environment between companies and the increasing community expectations, shows the need for entrepreneurship for the survival of organizations, and knowledge management can play a significant role in the entrepreneurial behavior of employees in organization. Objective: This article discusses the effect of knowledge management on employees' entrepreneurial behavior in Tehran Municipality 9th District in 2014-2015. Methods: The research method was descriptive-survey and an applied one. The statistical population included all the employees working in the municipality of 9th district of Tehran which added to 476 people. The sampling method was Random Stratified Sampling. Using Cochran’s formula 213 people were chosen as the sample size. To gather the data, standard questionnaires were used .Structural equation modeling (SEM) was adopted for data analysis. The validation of the structural model was achieved using LISREL. Findings: The data of this research has influenced the five dimensions of knowledge management (acquisition of knowledge, knowledge creation, knowledge storage, knowledge distribution and knowledge maintenance) on entrepreneurial behavior dimensions with 5 dimensions (paperwork reduction, change in employee behavior, strategic vision, creation of a work environment Energetic and supportive environment). The findings showed that knowledge management has a significant effect on entrepreneurial behavior of employees. Conclusion: This finding means that in the municipality of 9th district of Tehran, The use of knowledge management can play an important role in entrepreneurial behavior of employees; therefore, we must pay special attention to it in the organization. Manuscript profile -
Open Access Article
2 - Design of a model for determining the strategy of outsourcing in the maintenance operations, in manufacturing units
M. Alborzi H. AdabMost organizations don't follow a specific method to decide how to outsource their activities. Studiesshow that most organizations make these decisions mainly based on their overhead costs. In theseorganizations, those activities are selected for outsourcing which decre MoreMost organizations don't follow a specific method to decide how to outsource their activities. Studiesshow that most organizations make these decisions mainly based on their overhead costs. In theseorganizations, those activities are selected for outsourcing which decrease the overhead costs.In spite of wide studies about outsourcing a documented and comprehensive procedure for decisionmaking is not provided in the literature. In most articles, Only a quantitative spect of the decision makingprocess, that is cost, is considered or some guidelines are provided about the strategic nature of the decisions.In this study, a model is provided to make decisions about the amount of outsouring of maintenancesystems in manufacturing companies.Maintenance of equipment is mainly one of the candidates of outsourcing in manufacturing companies.With respect to importance of the system, while making decisions to outsource them, all related advantagesand risks should be considered and their short and long term outcomes should be regarded.In this model, first, using cluster analysis technique, all maintenance activities will be divided to someclusters. Then, it will be decided which of the clusters should be outsourced. Decision – making stepsinclude; Core competence, suppliers' market analysis, Analytical Hierarchical Process (AHP), sensitivityanalysis and final decision – making. Therefore, determining the amount of outsourcing of maintenancesystem will be accomplished via determining its subsystems and decision – making about them. Manuscript profile -
Open Access Article
3 - The effect of reciprocal obligation, trust and face maintenance on perceived individual and group achievements of knowledge management with the mediating role of knowledge sharing in the telecommunication company of Isfahan province
Malihe Soltani Hamid Reza PeikariThe purpose of this study is to investigate the effect of reciprocal obligation, trust and face maintenance on perceived individual and group achievements of knowledge management with the mediating role of knowledge sharing in the telecommunication company of Isfahan pr MoreThe purpose of this study is to investigate the effect of reciprocal obligation, trust and face maintenance on perceived individual and group achievements of knowledge management with the mediating role of knowledge sharing in the telecommunication company of Isfahan province. The present study is an applied research in terms of the purpose and the method of data collection is descriptive and correlational. The statistical population of this study was3100employees of Isfahan Telecommunication Company in2017among them, at least342people were selected as the statistical sample using Cochran formula and 351questionnaires were distributed based on non-probabilistic sampling process and data were collected. Data gathering method in the present research is field method and data collection tool is a localized. To analyze the data, SmartPls software was used in two levels of descriptive and inferential statistics. The results obtained from structural equations showed that the reciprocal obligation (β=0/55, t=4/5), trust(β=0/61,t=2/3),facemaintenance (β=0/18, t=1/8) and knowledge sharing (β=0/45,t=3/8) have a positive and significant effect on the perceived individual and collective achievements of knowledge management . Also, it shows the positive and significant effect of reciprocal obligation (β=0/52, t=5/3) and trust (β=0/64,t=4/9) on knowledge sharing, but showed no significant effect on knowledge sharing (β=0/04,t=0/31). Manuscript profile -
Open Access Article
4 - Study Relationship Between Organizational Culture and Total Productive Maintenance (TPM) (Case Study: Amol Industrial Town
Iman Ghasemi Delarestaghi Zohre Esmaielzade Hamid ShafizadehThe main purpose of this research is studying relationship between organizational culture and improving total productive maintenance (TPM) in Amol industrial town. This research according to its goal, is functional and according to its method is a descriptive and correl MoreThe main purpose of this research is studying relationship between organizational culture and improving total productive maintenance (TPM) in Amol industrial town. This research according to its goal, is functional and according to its method is a descriptive and correlation study. Statistical population of this research consists of Amol industrial town’s companies so that these companies have experience about total productive maintenance and other relevant subjects of it. Number of statistical population’s companies are 110 companies and among them, 86 companies have been chosen as statistical sample. In this research a questionnaire has been used which reliability of it was measured by using Cornbrash’s Alpha. Coefficient of it for organizational culture is .865 and for improving total productive maintenance is .831. Pearson Correlation Coefficient has been used for testing hypothesizes and also for analyzing data, Spss16 and Minitab14 soft wares have been used. Conclusions resulted from testing hypothesizes, show that there is a positive correlation between each four factor of organizational culture factors i.e. creating team, learning, top management’s support and communication with improving total productive maintenance. But there is not a correlation between another factor of organizational culture i.e. negotiation and improving total productive maintenance. Also, Conclusions resulted from testing the main hypothesis of this research show that there is a positive and strong correlation between organizational culture and improving total productive maintenance. Manuscript profile -
Open Access Article
5 - Mathematical modeling and problem solving Integrated production planning and preventive maintenance with limited human resources
، mohammd sharifzadegan Adel Pourghader ChobarThe need for integration has long been the focus of researchers and industry managers. Therefore, some researchers sought to coordinate and integrate production, maintenance and repair. The issues of integrating production planning, maintenance and repair and quality co MoreThe need for integration has long been the focus of researchers and industry managers. Therefore, some researchers sought to coordinate and integrate production, maintenance and repair. The issues of integrating production planning, maintenance and repair and quality control with other parts of production and industrial systems reduce costs and increase the profitability of production organizations. Accordingly, in this research, integration and continuity in simultaneous planning of production areas and support in production organizations have been discussed. These areas include the schedule of production, maintenance and preventive maintenance, and human resources. Therefore, the mathematical optimization model is presented with the aim of manpower planning and increasing the volume of the company's production by considering the limitations of human resources. In this model, personnel skills, equipment usage rate and equipment failure rate in case of uncertainty with fuzzy method are used in the model parameters. The purpose of the proposed model is to minimize the labor force deficit over production efficiency. The results obtained from the implementation in a production organization by comparing the indefinite and meta-innovative solution show the improvement in the company's production with the least reasonable time, provide answers with the least possible error. Sensitivity analysis shows that the rate of equipment failure in the intervals before and after the preventive maintenance process has a great impact on the value of the objective function of the mathematical model. Manuscript profile -
Open Access Article
6 - A DEA approach for investigating the effect of computerized maintenance management system on staff productivity: A case Study
M. Soltani A. Hadi-VenchehAccording to the growing trend of IT-based systems, implementation of computerized maintenance management system (CMMS) in Iran’s power industry can dramatically help in optimized management of maintenance activities, and thereby, reducing equipment failures, incr MoreAccording to the growing trend of IT-based systems, implementation of computerized maintenance management system (CMMS) in Iran’s power industry can dramatically help in optimized management of maintenance activities, and thereby, reducing equipment failures, increasing reliability, increasing product stability and, above all, increasing efficiency and productivity of the employees of this industry. The aim of this article was to examine the impact of computerizing the maintenance and repair process on efficiency of the staff of Isfahan south power plant, measure the efficiency of staff, identification of efficient and inefficient staff, rating of efficient staff, and finally, to investigate and compare the effect of factors influencing their efficiency to increase the organization productivity with job satisfaction approach. To do this, after identifying factors contributing to job satisfaction of employees through questionnaires distributed among 40 employees associated with CMMS, a DEA including four job satisfaction inputs and outputs was defined. With solving the model by CCR method, the efficient and inefficient employees were determined. The results of sensitivity analysis on model inputs determined the effect of each input on the output in accordance with the following ranking:1. Workplace safety and ergonomics2. Computerizing maintenance management system (CMMS)3. Training4. Job natureThe results indicated that the CMMS has the second ranking among other influential factors. Finally, the efficient personnel were ranked by Anderson Peterson method Manuscript profile -
Open Access Article
7 - Setup times optimization with considering maintenance scheduling by using nonlinear modeling
A. Zaretalab M.R. Shahryari S. NaderiThe present paper, titled “optimizing the time of preparation, taking into account the timing of repair and maintenance using non-linear modeling”, has been implemented with the aim of designing and presenting a mathematical model to get the best sequence of MoreThe present paper, titled “optimizing the time of preparation, taking into account the timing of repair and maintenance using non-linear modeling”, has been implemented with the aim of designing and presenting a mathematical model to get the best sequence of operations leading to minimum the total time of production. The main research question is related to the reduction of time and production costs following the implementation of the presented model. The method of research’s data and information collection, have been survey and study and library resources, referring to the documentations of repair, maintenance and production segments in the company and expert managers in the areas of planning, engineering production and … Following, the model taking into account the constraints of cost and time, as well as the limitations of the production system is presented. LINGO software is used to solve the models and model outputs, will provide the local solutions that would show the best sequence. And finally it can be extended the model to other industrial units with only smart alternations and present the best operational sequence related to multifunctional machines. Manuscript profile -
Open Access Article
8 - Using Data Mining and Three Decision Tree Algorithms to Optimize the Repair and Maintenance Process
M. Izadikhah D. GarshasbiThe purpose of this research is to predict the failure of devices using a data mining tool. For this purpose, at the outset, an appropriate database consists of 392 records of ongoing failures in a pharmaceutical company in 1394, in the next step, by analyzing 9 charact MoreThe purpose of this research is to predict the failure of devices using a data mining tool. For this purpose, at the outset, an appropriate database consists of 392 records of ongoing failures in a pharmaceutical company in 1394, in the next step, by analyzing 9 characteristics and type of failure as a database class, analyzes have been used. In this regard, three decision tree algorithms have been used to determine the most important attributes and to determine the effective rules for the failure. Based on the results obtained from the feature selection of all the three used algorithms, the lifetime characteristics of the machine, the name of the machine and the duration until the last failure are recognized as the most important attributes. On this basis, the life of the device has a very special importance. Since the depreciation in the pharmaceutical industry is high, so the life of the devices used in maintenance and repair has a special effect. In this regard, machines with a life span of more than 20 years are subject to high depreciation and failure, and in addition to the usual repairs they need some special repairs. Manuscript profile -
Open Access Article
9 - Condominium and Joint Ownership in Iranian and French Law
SH NikovandOne of the important issues the general civil practice dealswith is the significant benefits of the joint ownership and its realizedeconomic results. The author has fresh ideas on regarding theownership share regime and right of possession in the orders of thecivil law MoreOne of the important issues the general civil practice dealswith is the significant benefits of the joint ownership and its realizedeconomic results. The author has fresh ideas on regarding theownership share regime and right of possession in the orders of thecivil law in Iran. He offers good advices on the matter of exercisingthe right of possession and use by co-owners and the legal regulationswhich contain the legal relationship among the co-owners and alsothe way of obligation. He illustrates important trends that each coownerhas the right to possess and use whole common property,however, none of them shall exercise this right if it adversely affectsothers legal interest. He also emphasizes on the right of the co-ownersof disposition the property share. He documents the French approachon how they regulate this question Manuscript profile -
Open Access Article
10 - Survey on the Fisibility of Substitution Catastrophe Securitization and Current Reinsurance in Iranian Insurance Industry
Kambiz Peykarjou hanieh davodiAfter 2004, Alternative Risk Transfer (ART) has been more popular in the Litriture of Financial Economics & Financial Management. For using ART, many Researches Pursue Resolution, which Minimize Claims of this Catastrophe, through Risk Distribution Cycle, or if any MoreAfter 2004, Alternative Risk Transfer (ART) has been more popular in the Litriture of Financial Economics & Financial Management. For using ART, many Researches Pursue Resolution, which Minimize Claims of this Catastrophe, through Risk Distribution Cycle, or if any Profitability, find Subsititutions of ART; such as Insurance. However, we study about this, by Estimating Nnon-linear relation between Claims of Catastrophe and Insured Risk Capitals(IRC), Accounting Loss Distribution Function(LDF), given Historical Data(HD) & using Monte Carlo Simulation(MCS) and then, Stimating Value at Risk(VaR) of Conditional Loss Distribution Function of Catastroph(CLDFC), which has almost Optimal Profitability. Manuscript profile -
Open Access Article
11 - Land Line Consumer Problems and Perceptions on Telecom Services A study on Bharat Sanchar Nigam Limited
D. Srinivasa Prasad S. Gangadhara Rama Rao -
Open Access Article
12 - Understanding of Marketing Factors and Their Impact on the Attraction and Maintenance of Internet Business Customers (Case Study: Digi Commodity)
Mahmood MohamadiThe purpose of this study is to identify the factors of gamification and their impact on the attraction and maintenance of Internet business customers in the DJ's online store. The present research is a descriptive-survey research of structural equation model. The stati MoreThe purpose of this study is to identify the factors of gamification and their impact on the attraction and maintenance of Internet business customers in the DJ's online store. The present research is a descriptive-survey research of structural equation model. The statistical population in this research includes DJ's online store customers. To estimate the sufficient number of samples in this study, the Cochran model was used for estimating the sample size and the statistical samples were selected using simple random sampling. In the current study, the size of the statistical society is unlimited, and when the size of the statistical society is unlimited, the sample number will be 384 using the Cochran formula. Thus, 384 customers from DJ's store were selected as samples. At first, 11 variables were identified as the main variables of visualization. Then exploratory factor analysis was performed on them. Three main factors of game play, creation of virtual cyber sales and competition were extracted. Then, the effect of these three factors using the structural equation modeling technique Attraction and maintenance of customers were investigated and the results showed that all three factors of play, creation of virtual sales and competition have a significant effect on customer attraction and maintenance, respectively, direct effect of play (β = 0.45), creation of cyber sales (Β = 0.35) and competition (β = 0.20) on attracting and maintaining customers at the level (P <0.01) positive and meaningful Is significant. Manuscript profile -
Open Access Article
13 - Pricing in the Islamic Market
Mohammad Sadeq Fazel Hasan Khodabakhshi Asghar ArabianOne of the major issues in Islamic economics is the quality of determining the price of goods and services in the market. In the normal conditions of the market, there is no consensus among the Shiite and Sunni jurisprudents on the market, but in special economic condit MoreOne of the major issues in Islamic economics is the quality of determining the price of goods and services in the market. In the normal conditions of the market, there is no consensus among the Shiite and Sunni jurisprudents on the market, but in special economic conditions such as hoarding, collusion and monopoly, there is a controversy between the jurisprudents of the Imams and Sunni scholars. After searching in the jurisprudential books, six promises can be found in the problem, all of which are based on the general rules and customary narratives of the pricing; But the question is, is it possible to preserve the natural conditions of the market? Does the pricing of the marketplace not be one of the methods of market surveillance and thus not preserving the natural conditions of the market? Also, some Sunni jurisprudents believe that the philosophy of pricing is that the market is to be tempered and that it applies to all the goods needed by the people. These ambiguities require a re-examination of the pricing issue in the Islamic market. Therefore, this paper analytically and by referring to the authentic jurisprudential books of the Imams and Sunni people, concludes in the end that by referring to some general rules, the rule of preservation of the system, the rule of co-operation, the rule of law and the rule of Ehsan, as well as Relying on the rationale, it can be concluded that the ruler, in the normal conditions of the market. Manuscript profile -
Open Access Article
14 - An analysis of urban public spaces exptation to reduce Vandalism
sahar esmaeilpourhamedani esmail shieh Kianoosh ZakerhaghighiBackground and Objective: The patterns of people's behavior in urban public spaces are based on the role of location and situation. In other words, the place induces human behavior and actions in space. Vandalism as a subset of crime and one of the most important proble MoreBackground and Objective: The patterns of people's behavior in urban public spaces are based on the role of location and situation. In other words, the place induces human behavior and actions in space. Vandalism as a subset of crime and one of the most important problems in cities. Material and Methodology: The documentary method is an analytical method that uses Correlation to study the ratio of variables. The case study strategy is and the paradigm is positive. Locations and the extent of vandalism in urban public spaces with the most potential vandalism people have been investigated and evaluated. The collection of qualitative and quantitative data is objectively and subjective, which is dealt with by the etic approach to the conception of as a matter of fact and as a matter of perception. The case study is a part of the urban public spaces of Hamadan district, which mainly focus on the use of boys' instructional skills, aged 15 to 25 in terms of gender, boys and men, and sex, income, and community base at the lower level of society. Data analysis using the Anova-based spss software is the most effective index of choice among selected indicators through exploratory factor analysis and through the regression analysis, the effectiveness of each of the factors is determined. Findings: The findings of the data analysis indicate that, Location, Enclosure, care and maintenance of urban public spaces are effective in reducing Vandalism tendencies and consequently the rate of occurrence of Vandalism behaviors. Discussion and Conclusion: It can be said that the findings of this study are consistent with theoretical expectations and literature reviw. The first priority of the effectiveness was assessed, which should be policy and strategies by researchers, urban designers and urban planners to reduce the spatial effects of these components on the incidence of vandalism behaviors in urban public spaces. Manuscript profile -
Open Access Article
15 - Checking the Unauthorized Use Arable Land and Gardens in Jurisprudence and Law
Mohammadali askari Ali mohammadianPopulation growth and development of the cities and the rising cost of land and irregular utilization of the land cause the good agricultural land Always consider by jobber and the change of use and shrinking the globe, remove them from the production cycle and cause se MorePopulation growth and development of the cities and the rising cost of land and irregular utilization of the land cause the good agricultural land Always consider by jobber and the change of use and shrinking the globe, remove them from the production cycle and cause severe damage to agricultural production. So the protection of agricultural lands, not only to support agricultural economics, but also to support the economy, it is imperative given the importance of agricultural lands, Parliament with proper understanding of the risks of changes in agricultural land use, in 1374 passed a law under the title: maintain agricultural lands and gardens, the law was later revised and amended. In this study, we try to critique and analysis of the law, answered to important questions what strategies and legal and effective legal in confronting unauthorized users by changing farm and orchard there. Manuscript profile -
Open Access Article
16 - Jurisprudence approach over the costs of education and health in wife's alimony
zeinab mashhoodi ابراهیم شبیریAbstract This study sought to determine the scope of legal and jurisprudential aspects Nfqh wife. According to Article 167 of the constitution in cases where the law is silent about the sentence or brief question must issue a warrant to be derived from legal sources and MoreAbstract This study sought to determine the scope of legal and jurisprudential aspects Nfqh wife. According to Article 167 of the constitution in cases where the law is silent about the sentence or brief question must issue a warrant to be derived from legal sources and according to the jurists. Article 1107 of the Civil Code of the Islamic Republic of Iran analogy is considered to be the wife's alimony, but he set the range for the costs of education and health, explicitly or even implicitly there. So to extract the sentence should refer to the sources of Islamic law and doctrine. In this context, by examining legal opinions on the Nfqh wife, it proves that maintenance In addition to items such as food, clothing and housing, such as education and health costs as well as the wife. Of course there are differences of opinion on this issue, but as always conventional, popular opinion is preferred. Thus, according to the study presented conditions that have been conditionally costs are not absolutely the wife's alimony, unlike other conventional alimony. Manuscript profile -
Open Access Article
17 - Examining the legal status of the condition for determining housing for a woman in a permanent marriage
Amir Hossein Eivazkhani Seyyed Mahdi MirdadashiThe right of a wife to be provided a dwelling by the husband is agreed upon by all Islamic jurists and there is no dispute about this matter. All Islamic jurists are unanimous that it is a husband’ s duty to provide a dwelling, either owned, borrowed or leased, fo MoreThe right of a wife to be provided a dwelling by the husband is agreed upon by all Islamic jurists and there is no dispute about this matter. All Islamic jurists are unanimous that it is a husband’ s duty to provide a dwelling, either owned, borrowed or leased, for a wife as is appropriate for her. Articles 1106 and 1107 of the Civil Code assert that providing a dwelling is part of the cost of maintenance, to be borne by the husband; however, at times this can be contradicted by stipulating otherwise and the wife can take the power of determining the joint dwelling from the husband as per a condition as an integral part of the marriage contract. Some questions arise in this situation: 1) What legal sanctions are available for the condition to determine the dwelling? 2)What are the advantages and disadvantages of this conditions for safeguarding family foundations? The results of this study show that the dwelling determination condition is sometimes deemed as a void condition and sometimes a valid condition, but the marriage contract and the dowry are valid. Manuscript profile -
Open Access Article
18 - Study of contamination of total microbial count of industrial hamburgers during storage in unfavorable temperature conditions
Mahdi Ahmadi seyed abbas seyed mirzaeiBackground and Objective: Today, the use of foods such as hamburgers has increased due to the industrialization of human societies. Regarding the use of hamburger, the importance of hygienic production of this product and the lack of its microbial characterization durin MoreBackground and Objective: Today, the use of foods such as hamburgers has increased due to the industrialization of human societies. Regarding the use of hamburger, the importance of hygienic production of this product and the lack of its microbial characterization during storage in real conditions, the study of the effect of unsatisfactory storage conditions on burger microbial properties is essential. The aim of this study was to investigate the amount of hamburger contamination in terms of aerobic mesophilic count and its changes relative to the adverse conditions of temperature Materials and Method: In this study, 25 samples of 60% meat hamburger from 5 different brands were performed microbial test. Microbiological testing involves the total count of microorganisms . Samples were stored at a temperature of 25 ° C after the initial test in 4 periods of one week and after each period, a relevant microbial test was performed on them. Results: In these tests, the highest and lowest levels of contamination have been reported for test 5 and 1 respectively. It was also found that the longer the storage period was in unfavorable conditions (5 ° C), the probability of growth of the germs increased and a higher amount of counts was reported. Conclusion: Maintaining hamburger samples under adverse temperature conditions is one of the environmental factors that endangers product and consumer health. Keywords: Hamburger, Total Microbial Counting, Maintenance Manuscript profile -
Open Access Article
19 - Joint Optimization of Spare Parts Strategy and Maintenance Policies for Manufacturing Systems
mohammadali farsi Enrico Zio -
Open Access Article
20 - The role of human resource management on the maintenance of coaches of sports clubs in Isfahan during the covid 19
gholamreza dadkhah mina MostahfeziyanObjective: The purpose of this study was to investigate the role of human resource management on the maintenance of coaches in sports clubs in Isfahan during the Covid period. Objective: The purpose of this study was to investigate the role of human resource management MoreObjective: The purpose of this study was to investigate the role of human resource management on the maintenance of coaches in sports clubs in Isfahan during the Covid period. Objective: The purpose of this study was to investigate the role of human resource management on the maintenance of coaches in sports clubs in Isfahan during the Covid period. Methodology: The present study was a descriptive-correlational descriptive study and in terms of the purpose of its implementation is an application that was conducted as a survey. The statistical population includes all male coaches of sports clubs in Isfahan in the first half of 1400 with a coaching experience of more than 5 years and above, whose number is reported to be 240 people. That (150) people were considered as a statistical sample. To collect the required information, the standard questionnaire of methods of conservation of human resources (2014) was used. Data analysis at two levels of descriptive and inferential statistics. In the descriptive statistics section, statistical characteristics such as frequency, percentage, mean and standard deviation were used, and in the inferential statistics section, multiple regression tests, Pearson correlation coefficient and analysis of variance tests were used. Results: The results showed that the correlation coefficient between welfare services and retention of coaches is significant. That is, it has an effect between welfare services and the maintenance of coaches (B = -0.362). The results also show that the correlation coefficient between safety and retention of coaches is significant. That is, safety affects the maintenance of coaches (B = 0.437). It also shows that the correlation coefficient between health and maintenance of coaches is significant. That is, health has an effect on the maintenance of coaches (B = 0.482). The results show that the correlation coefficient between the benefits on retention of coaches is significant. That is, the benefits are affected by the retention of coaches (B = 0.409). Conclusion: It is suggested that the process of upgrading safety management be done in order to achieve the maintenance of club coaches in line with their safety policy against Covid 19 virus. Manuscript profile -
Open Access Article
21 - Simulating the Maintenance Performance on the Attractiveness of Data Center Services: A System Dynamics Approach
Mohammedreza Bahrami Gholamreza Hashemzadeh -
Open Access Article
22 - Using Genetic Algorithm to Robust Multi Objective Optimization of Maintenance Scheduling Considering Engineering Insurance
Somayeh Molaei Mir Mahdi Seyed Esfahani Akbar Esfahanipour -
Open Access Article
23 - A Heuristic Algorithm for Solving Single Machine Scheduling Problem with Periodic Maintenance
Amir Ebrahimi Zade Mohammad Bagher Fakhrzad Mohsen Hasaninezhad -
Open Access Article
24 - Joint Maintenance and Spare Parts Inventory Planning (Case Study : Pre – Paint Shuttle Robot of an Automotive Company)
seyd mohamad reza aboalaghaey Davood Mohammaditabar Sadigh RaissiCarrying out maintenance planning for machine tools is one of the critical factors in reducing operating costs. Inventory management is a key element on the performance of the maintenance policy. Through current research, an integrated inventory control of spare parts a MoreCarrying out maintenance planning for machine tools is one of the critical factors in reducing operating costs. Inventory management is a key element on the performance of the maintenance policy. Through current research, an integrated inventory control of spare parts and maintenance scheduling is proposed to determine the maximum inventory level as well replenishment cycle (S,T), along with the determination of the optimal preventive maintenance period. The total cost associated with the maintenance system, such as the cost of periodical and emergency orders and the costs of inspections and repairs are minimized via the model objective function. To illustrate the capability and performance of the model, the results of applying the model into a case study is reported in an automotive pre-paint line for determining inventory control policies of a critical item. In addition, in order to analyze the stability of the results, the sensitivity of the variables to the changes in input parameters has been investigated. Based on the results, the total cost is affected by the failure rate, the lead time period, and the cost of replacing defective items. In this regard, the system is more sensitive to failure rate and the lead time. In the case of constant failure rates, applying the proposed method might be successful. Manuscript profile -
Open Access Article
25 - A novel method for selecting optimum maintenance strategy using Fuzzy Analytic Network Process and Fuzzy Multi-Choice Programming approach
Iman Zohreie Ali MohtashamiMaintenance systems are critical to achieving the goals of the organization. The main purpose of these systems is to optimize machinery's ability to maximize production and reduce its erosion and malfunction. Accordingly, one of the main concerns of managers in companie MoreMaintenance systems are critical to achieving the goals of the organization. The main purpose of these systems is to optimize machinery's ability to maximize production and reduce its erosion and malfunction. Accordingly, one of the main concerns of managers in companies is selecting the appropriate strategy for maintenance of equipment and machinery. This research presents novel method for selecting optimal maintenance strategy based on Fuzzy Analytical Network Process and Fuzzy Multi-Choice Goal Programming. The method of calculating the fuzzy weights of elements is explained by FANP method and then by de-fuzzy obtained weights and writing the ideals and the objective function and applying the FMCGP approach maintenance strategies will be prioritized. Finally, in the form of a case study, the optimal maintenance strategy among Preventive Maintenance, Reliability base maintenance, Condition base maintenance, Time base maintenance, corrective maintenance and Design-out maintenance for the four selected machines in Mashhad Milk Powder Company is considered. In this regard, by literature review six criteria and thirty sub-criteria has been taken and paired comparison questionnaire was distributed among the ten experts and their views were aggregated and geometric mean was taken from them, and by the FANP approach, the weight of the elements are calculated. Since the weight of the criteria is obtained from FANP method, then the general score of the problem is obtained by solving FMCGP. The present research can provide a comprehensive view of decision makers, especially maintenance managers, and assist them in selecting optimal maintenance strategy. Manuscript profile -
Open Access Article
26 - Providing an optimal model of production planning, repairs and maintenance and scheduling of labor in conditions of uncertainty and solving it with the ant algorithm
mohammd sharifzadegan Tahmourth sohrabi Ahmad Jafarnejad Chaghoshi,Abstract: In today's competitive environment, production productivity is a very important and key issue. However, all department of the production unit are interdependent. Rapid response to customer needs, diversity, reliability and cost of equipment and machinery due t MoreAbstract: In today's competitive environment, production productivity is a very important and key issue. However, all department of the production unit are interdependent. Rapid response to customer needs, diversity, reliability and cost of equipment and machinery due to the widespread limitations in production resources to be competitive and gain market share in conditions of uncertainty, is needed to make management decisions from Use an integrated format that incorporates important elements. Accordingly, in this study, the integration of three important areas in manufacturing companies has been addressed. These areas include production planning, maintenance, and manpower planning. In this way, a mathematical model with the aim of optimal use of labor and increasing production volume is presented. In this model of workers' experience, machine utilization rate and machine failure rate are expressed uncertainly and with fuzzy numbers. To solveing this model, the ants meta-innovation algorithm has been used. Numerical results obtained from the implementation in an industrial company show that the algorithm used can provide answers with the least possible error in a reasonable time. Sensitivity analysis also shows that the failure rate of the machine before and after repairs and maintenance has a great impact on the value of the objective function of the mathematical model. Manuscript profile -
Open Access Article
27 - Using Artificial Neural Network Methodology and Fuzzy Logic to Design an Intelligent Model for Optimizing and Preventive Maintenance in Interaction with Production in the Textile and Clothing Industry
Sayyed Shahram fatemi Mehrdad Javadi Amir Azizi Sayyed Esmail NajafiIn this research, the intelligent model of preventive maintenance and repairs based on artificial neural network methodology - fuzzy logic with the help of artificial intelligence environment of MATLAB software based on the structure of Falcon's five-layer model of arti MoreIn this research, the intelligent model of preventive maintenance and repairs based on artificial neural network methodology - fuzzy logic with the help of artificial intelligence environment of MATLAB software based on the structure of Falcon's five-layer model of artificial neural networks is presented, the research method is based on systems thinking. After determining the most important factors affecting preventive maintenance and repairs with the help of a questionnaire and based on a dataset of 2,000 samples of data and reports of the Director General of Textile and Clothing Industries of the Ministry of Safety during the years 1396 to 1401 (in the form of six and a half years) and validity Data evaluation by the maintenance and repair experts of 240 industrial units, a smart model was designed, which after the implementation of the model in Borujerd textile factories as the place of implementation of the plan can be claimed if (If); Five "technology" factors have values of 0.9129; Good condition (upper bound of good membership function), "Employees" has values of 0.9239; good condition (upper bound of good membership function), "working environment" has values of 0.8859; relatively good (lower limit of the membership function), "quality" has values of 0.9999; Perfect condition (highest function), "strategy" has values of 0.9999; good status (upper limit) in preventive maintenance and repairs, then: the status of the output variable of the research, i.e."Optimization of preventive maintenance and repairs performance (Y)" will be at its fifth level, i.e. very good, equal to 0.882. Manuscript profile -
Open Access Article
28 - Determining the effective factors in the priorities of maintenance strategies by combining factor analysis and ahp methods (Case study: East Azerbaijan Water and Sewerage Company)
Somayeh Fakhimi Hossein Zad Yagoub Alavi Matin Suleiman IranzadehChoosing the right strategy for maintenance and repairs in an equipment-oriented organization is very important and has a direct impact on productivity, profitability and cost. Maintenance and repairs play an important role in maintaining the reliability of production q MoreChoosing the right strategy for maintenance and repairs in an equipment-oriented organization is very important and has a direct impact on productivity, profitability and cost. Maintenance and repairs play an important role in maintaining the reliability of production quality, reducing waste, reducing risk, increasing efficiency and increasing joint satisfaction, etc. Among the most important strategies of maintenance and repairs, we can mention the corrective and preventive maintenance and repairs based on condition and reliability, which according to the situation and environmental conditions, the application of each one has advantages and disadvantages. The purpose of this article is to provide a general method for choosing the best strategy for maintenance and repairs in equipment-oriented organizations such as water and sewage. It has been tried to use the method of confirmatory factor analysis to model the structural equations of least partial squares, the factors affecting the choice of maintenance and repairs strategy by expert questionnaire and SMSRT PLS software, which is a useful software for the modeling of structural equations of least partial squares, have been investigated and confirmed factors. In order to prioritize the four maintenance strategies of preventive, predictive, corrective and based on reliability by AHP technique, which process requires breaking the decision problem with several indicators into a hierarchy of levels, it should be used in EXPERT CHOISE software. The results of this analysis have determined the first priority of using the method of preventive maintenance and repairs to advance the goals of maintaining the company's critical equipment. Manuscript profile -
Open Access Article
29 - Development of the TRIZ Contradiction Matrix to Select Appropriate Procative Maintenance Tactics Using the meta-synthesis method; Case Study: NISOC
mohammad amin mortazavi Atefeh Amindoust arash shahin mehdi karbasianThe effective selection of maintenance tactics in the industry according to the factors and conditions affecting each of the equipment, shows the need to use innovative approaches. The purpose of this study is to obtain a matrix similar to the TRIZ contradictions matrix MoreThe effective selection of maintenance tactics in the industry according to the factors and conditions affecting each of the equipment, shows the need to use innovative approaches. The purpose of this study is to obtain a matrix similar to the TRIZ contradictions matrix so that with the help of this matrix, appropriate maintenance tactics and functional repairs can be selected according to the condition of each equipment. In this study, in order to compare and analyze qualitative data, the , Meta-synthesis method has been used, so for this purpose, various databases, publications and search engines between 1960 and 2022 have been studied. The result of the studies performed using the , Meta-synthesis method is the extraction of 115 valid and related articles. In this research, the relationship between TRIZ principles and operational maintenance tactics has been obtained using the , Meta-synthesis method.The result of this research is the achievement of a matrix similar to the TRIZ contradiction matrix with the ability to provide and select maintenance tactics, corresponding to the parameters affecting each equipment. In order to make the right decision, the final results in each of the matrix cells of this study are prioritized using decision making methods. This matrix assists managers and maintenance specialists in decision-making and increases the speed of decision-making and selection of appropriate tactics. . Finally, the resulting matrix has been studied for evaluation in the National Iranian South Oilfields Company. Manuscript profile -
Open Access Article
30 - Designing an intelligent model of preventive maintenance and repairs in the textile and clothing industry with the help of statistical analysis (case study of Borujerd textile factories)
Sayyed Shahram fatemi Mehrdad Javadi Amir Azizi Sayyed Esmail NajafiIn this study, the identification of the most important influencing factors for intelligent preventive maintenance and repair in the textile industry in interaction with manufacturing was performed using Spss 25 software. The research data set is based on the 2000 sampl MoreIn this study, the identification of the most important influencing factors for intelligent preventive maintenance and repair in the textile industry in interaction with manufacturing was performed using Spss 25 software. The research data set is based on the 2000 sample data and reports from the Director General of Textile Industry under the Ministry of Industry, Mine and Trade and the factories in the textile industry of Borujerd where the project was implemented on a semiannual basis as of 2015 to 2020. This survey is significant in that it collects information in cooperation with specialists in the maintenance industry and the textile industry (information was collected from 240 establishments of 630 textile factories nationwide). The study sample size included professors, managers, and professionals from the textile industry. A comparison of the pre-test questionnaire (functional status) and the post-test questionnaire (ideal status) and statistical analysis calculations yielded the following results. The relationships between the study variables and the most important preventive maintenance and improvement factors in interaction with production in the textile industry have been classified as follows: strategy factor with the possibility of determining 34%, technology factor 30%, work environment factor 16%, staff factor 10%, the quality factor was identified by 10%. Manuscript profile -
Open Access Article
31 - Presenting a New Approach to Improve Effectiveness and Select the Most Critical Equipment Using Data Mining, Fuzzy DEMATEL, FMEA and FTA Approaches
Mohammad Ehsanifar Nima Hamta Parisa BolhasaniTaking attention to reliability and maintenance management conception has substantially significantly increased over the recent decades. This paper proposes and integration of DATA MINING, Fuzzy DEMATEL, and FMEA technique in order to improve the reliability and effecti MoreTaking attention to reliability and maintenance management conception has substantially significantly increased over the recent decades. This paper proposes and integration of DATA MINING, Fuzzy DEMATEL, and FMEA technique in order to improve the reliability and effectiveness of maintenance management in Shazand Petrochemical Company. Firstly, the most critical cluster is selected among final clusters obtained from software by utilizing DATA MINING technique. Secondly, Fuzzy DEMATEL technique is used to identify a collection of most critical and most effective equipment of critical cluster under fuzzy condition. Finally, the FMEA and FTA techniques applied to identify the risks numbers and the main causes of the failure and then the solution will be proposed to solve the problems and improve the system. Manuscript profile -
Open Access Article
32 - Prioritizing Barriers to Implementation of Computerized Maintenance Management System in the Organization (Case Study: Iranian Offshore Oil Company)
Hadi Shiroiezadeh Ayar Karimi Saeed Kolahi-RandjiAlong with the advent of the industrial revolution and the use of machinery, Its maintenance also has been taken into account by authorities in order to increase the efficiency and equipment safety levels. Preventive maintenance performs with a preventive approach MoreAlong with the advent of the industrial revolution and the use of machinery, Its maintenance also has been taken into account by authorities in order to increase the efficiency and equipment safety levels. Preventive maintenance performs with a preventive approach based on accurate and precise data analysis, determining the cause of loss; incidents root cause identification and defining corrective actions in maintenance system. Mechanized systems of maintenance management in the organizations have been implemented with the same approach. Statistics show that more than 80% of CMMS projects will be failed. Barrier detection of the implementation of CMMS can help management to find solutions and as a result, resolve them. So this study has been done to ascertain and rank the critical factors of success and failure in the implementation of the system, using a combination of the two DEMATEL and fuzzy TOPSIS methods. Various factors can affect the success of system implementation projects. So, in this study after determining of the goal, in the first step, the main challenges associated with their underlying factors that are affecting the implementation of CMMS, by using of literature, experts identifying and tracing their hierarchy will be discussed. In the second step, by using of the fuzzy DEMATEL to evaluate the relationships between criteria and the weighting of criteria will be measured considering the hierarchy. After determination of the weight of each criterion, as the third step fuzzy TOPSIS method is used to rank all the factors and sub-criteria. The results of using this hybrid approach (abovementioned methodology), indicated that did not select the right contractor, has the greatest impact on CMMS implementation in the organization. Manuscript profile -
Open Access Article
33 - Maintenance Management Value Chain in the Revenue Enhancement and Productivity in Kermanshah Petrochemical Industries Company
Farhad Vafaei Amir Moradi Sina FarajiThis study examined the effectiveness of maintenance management value chain in Kermanshah Petrochemical Industries Company which can lead to revenue enhancement and productivity. A total number of 126 employees of Kermanshah Petrochemical Industries Company were selecte MoreThis study examined the effectiveness of maintenance management value chain in Kermanshah Petrochemical Industries Company which can lead to revenue enhancement and productivity. A total number of 126 employees of Kermanshah Petrochemical Industries Company were selected by simple random sampling. Ghasemi's (2014) value chain questionnaire and Hersey and Goldsmith’s (2005) organizational efficiency questionnaire were used to collect data. Afterwards, SPSS software was used to analyze the data. The results showed that the revenue enhancement and maintenance management value chain were effective. Moreover, the maintenance management value chain can predict the amount of revenue enhancement and efficiency in Kermanshah Petrochemical Industries Company. The results showed that the maintenance management value chain has been done properly in Kermanshah Petrochemical Industries Company. Manuscript profile -
Open Access Article
34 - Identify and Provide Indicators to Monitor the Process of Maintenance
Gholamreza Hashemzadeh Mehdi Vahedi AzadDue to the role of the process of maintenance in the production of competitive products by reducing the stop of machines and create a field for most employees, partnership in the guidance and steering this process is essential. It seems that this process, from the persp MoreDue to the role of the process of maintenance in the production of competitive products by reducing the stop of machines and create a field for most employees, partnership in the guidance and steering this process is essential. It seems that this process, from the perspective of users, can identify the strong points to improve and to upgrade the planning in manufacturing systems, monitoring, and measurement. Currently, industries use some time-based indexes that is not sufficient for monitoring this process. With regard to the importance of this issue, identify and provide indicators which can monitor the process of maintenance are very important. This paper has attempted to provide indicators to assess the quality of maintenance services with emphasize on time and cost factors as control measures. Using historical studies and research and interviews with industry experts, indicators as the control criteria are introduced to assess the level of quality of service maintenance provision. In this research, the proposed indicators affect the quality of the maintenance process are divided into three sections including customer demands, maintenance of process and output indicators. The result of its use in the maintenance process of Pars Khodro Co. showed that the performance of this method to assess the level of quality of maintenance process is effective and useful. Manuscript profile -
Open Access Article
35 - Selecting preventive maintenance method for flexible pavements
علی بابائیOver the years, researchers and engineers in asphalt and bitumen industry have used different methodologies for various methods of asphaltic pavements’ maintenance. Type and application of different preventive and passive maintenance methods are studied. Unfortuna MoreOver the years, researchers and engineers in asphalt and bitumen industry have used different methodologies for various methods of asphaltic pavements’ maintenance. Type and application of different preventive and passive maintenance methods are studied. Unfortunately, in IRAN, this matter is not concerned yet. In this study have been tried that while introducing various methods of asphaltic pavements’ maintenance, time and location of these maintenance works, as well as effectiveness of them could be studied. Determinig the most effective and most most economic maintenance method for different pavements is also studied. Manuscript profile -
Open Access Article
36 - Designing an intelligent dynamic model of preventive maintenance and repairs in the textile and clothing industry in the interaction of production with the help of simulation (a case study of Borujerd textile factories)
سیدشهرام فاطمی مهرداد جوادی اسماعیل نجفی امیر عزیزیAbstractThe aim of the research is "designing a smart dynamic model of preventive net using simulation in interaction with production" based on the documentation of textile and clothing industries under the title of dynamic preventive net model. In order to calculate th MoreAbstractThe aim of the research is "designing a smart dynamic model of preventive net using simulation in interaction with production" based on the documentation of textile and clothing industries under the title of dynamic preventive net model. In order to calculate the dynamics of the system, Vansim software and research data were prepared based on a sample of 2000 data and reports from the textile and clothing industries during the years 2016 to the end of 2014 and the textile factories of Borujerd as the location of the project on a semi-annual basis. The results of the research show that the growth rate of "working environment on the net" has reached the lowest growth rate of 1.2% in 2016 and 3.5% in 2018 and a higher growth of 6% in 2014. The growth rate of "Internet technology" has reached an average growth rate of 1.2% in 1396, 5% in 1398, and a higher growth of 8.5% in 1400. The dynamic growth rate of the variable "Strategy in Net" has reached the maximum growth rate of 1% in 2016, 6% in 2018, and a higher rate of growth in 2014, i.e. 9.5% (optimal state). Manuscript profile -
Open Access Article
37 - Securing the Family Livelihood in the ‘Ten Sentences of Mādayān ī Hazār Dādestān’
zahra hisseiniIn the The Book of A Thousand Judgement, a valuable book survived from the time of Sassanid, so many legal terms can be found that expose the Social and cultural situation of the said era, but the importance and attraction of the family related laws in the book cannot b MoreIn the The Book of A Thousand Judgement, a valuable book survived from the time of Sassanid, so many legal terms can be found that expose the Social and cultural situation of the said era, but the importance and attraction of the family related laws in the book cannot be denied. This article examines the legal term of "xwarišn ud dārišn: maintenance, contribution and support" or "xwarišn ud wastarag, securing the food and clothing" in the ten sentences of the Mādayān ī Hazār Dādestān. Some questions on the subject will be raised to see which individuals were included in the Sassanid Civil Law of xwarišn ud dārišn or xwarišn ud wastarag(maintenance) and how was the situation of the illegitimate and non-illegitimate guardians of children. Based on the legal sentencesof the Mādayān ī Hazār Dādestān, we find out that support of the law for safeguarding the family and respecting its bounds are explained, but the legislator with a heroic point of view is wisely managing the events and rough conditions of the society.This article is composed in a theoretic spirit and in a historical analistic method of writing with the aim of explanation of legal function of maintenance and individuals under the guardianship in the civil society of the Sassanid era. Along with interpretation of the legal term of xwarišn ud dārišn or xwarišn ud wastarag, we will find out about its social and cultural function in making family in the Sassanid era. Manuscript profile -
Open Access Article
38 - Identifying and Ranking the Criteria of Outsourcing Capabilities of Maintenance Activities and Analyzing the Profitability of Outsourcing Using Bayesian BWM
Hamid Esmaili Hossein Kaveh Pishghadam -
Open Access Article
39 - Proposing a Hybrid Model of Fuzzy Multi Attribute Decision Making for Prioritizing and Selecting Maintenance Strategies
Ali Mohtashami Mohamad Miri Asl The purpose of this paper to evaluate the preferred maintenance strategy is multi-criteria decision-making methods. For the purpose of decision making under uncertainty has been studied, So that all data is arranged in a triangular fuzzy number. In the proposed More The purpose of this paper to evaluate the preferred maintenance strategy is multi-criteria decision-making methods. For the purpose of decision making under uncertainty has been studied, So that all data is arranged in a triangular fuzzy number. In the proposed method of this paper, the weights are calculated Then Strategies and then taking measures with the fuzzy TOPSIS method, fuzzy vikor and Fuzzy Simple Additive Weighting rankings were. Then, taking into account the ranking obtained using these methods and techniques Copeland and Average Rating final ranking of strategies was calculated. In order to assess the performance of the model, a case study was carried out at Bid Boland Gas Refinery Co and Results obtained from the use of this method is presented in the target company. The results indicate that the model is an appropriate model for preventive maintenance strategy selecting. Finally, suggestions for future research are presented. Manuscript profile -
Open Access Article
40 - Evaluation of Support Systems and Maintenance of Machinery for Road Construction and Construction Projects
Mohammad Safipoor Mohsen MohammadizadehRoad construction machinery has considerable importance in construction projects. Among the issues related to machinery, maintenance and repair are very important because maintenance and repairs (machines) are directly related to their costs as well as the overall cost MoreRoad construction machinery has considerable importance in construction projects. Among the issues related to machinery, maintenance and repair are very important because maintenance and repairs (machines) are directly related to their costs as well as the overall cost of the project. The repair method after the failure is replaced by other maintenance and repair methods that are currently used in many organizations. Reliable Maintenance and Maintenance (RCM) is a process that determines the maintenance and repair needs of equipment and machinery in working conditions so that each of this equipment performs its core tasks in the best possible manner. Instead of concentrating on cost reduction, this method focuses on increasing reliability, which means that costs have been reduced by improving reliability. Reducing maintenance costs is a good and timely maintenance. In this study, a case study of this method has been carried out during a one-year period at Jahad Nasr Sirjan Company and compared with a sample of Sarcheshme Copper Company, which would be acceptable. Manuscript profile -
Open Access Article
41 - Maintenance appropriate strategy selection for fire tube boilers in dyeing factories by using fuzzy hierarchical analytic process (case study of Semnan kork nakh co.)
Mahdi Daraie Mohammadmehdi MovahediThe aim of this study to prioritize maintenance strategies using fuzzy hierarchical analysis. Selection and implementation of an optimal level of maintenance strategies based on key factors such as availability, reliability and attention to investment in this multi-crit MoreThe aim of this study to prioritize maintenance strategies using fuzzy hierarchical analysis. Selection and implementation of an optimal level of maintenance strategies based on key factors such as availability, reliability and attention to investment in this multi-criteria issues that engineers and managers face sheet. The structure of decision-making and problem-solving research-based criteria to evaluate the safety, cost, value-added and feasibility of four different strategies with preventive maintenance, predictive maintenance, maintenance and corrective maintenance based on the confidence in the smoke tube boilers used in the dyeing industry is. The first phase consisted of the main criteria and sub-criteria review using experts and determine the weight of primary and secondary standards. The second phase includes determining the final ranking of options using the technique of decision-making are fuzzy hierarchical analysis. The results are drawn from industry experts note that it is spinning and engineering facilities maintenance strategy based on reliability in the industry for this equipment is acceptable. This article uses Small Industries & Industrial Parks Organization's financial support is provided during the contract number 8902. Manuscript profile -
Open Access Article
42 - Modelling and solving the job shop scheduling Problem followed by an assembly stage considering maintenance operations and access restrictions to machines
Seyed Mohammad Hassan Hosseini -
Open Access Article
43 - Three Hybrid Metaheuristic Algorithms for Stochastic Flexible Flow Shop Scheduling Problem with Preventive Maintenance and Budget Constraint
Sadigh Raissi Ramtin Rooeinfar Vahid Reza Ghezavati -
Open Access Article
44 - Investigating Water Supply System Electro-Mechanical Equipments Problems: A Case Study of Ethiopia
Dessie Tarekegn Bantelay -
Open Access Article
45 - Availability analysis of a cooking oil production line
Afshin Yaghoubi Saeed Rahimi Roya Soltani Seyed Taghi Akhavan Niaki -
Open Access Article
46 - Integrating Maintenance Management System in IBS Building Projects: A Qualitative Study
Zul-Atfi Ismail -
Open Access Article
47 - Designing a Maintenance Management Model based on Interpretive Structural Modeling
mohammad Hossian karimi Govareshaki Jafar Gheidar Kheljani Hossein BeigianThe worldwide development of Maintenance Management Models (MMM) underscores the need of various organizations to take into account contextual and organizational differences and to design a model that is congruent with their context-based requirements. The purpose of th MoreThe worldwide development of Maintenance Management Models (MMM) underscores the need of various organizations to take into account contextual and organizational differences and to design a model that is congruent with their context-based requirements. The purpose of the current study was to design an executive Maintenance Management Mode based on the Interpretive Structural Modelling Approach. To serve the purpose, the constituent components of the MMM were initially identified through literature review and interviews with experts which specified 14 components and 56 subcomponents in the form of 6 essential factors. Next, Interpretative Structural Modelling was employed to establish the relationship among the components and subcomponents ant to sequence them accordingly. Eventually, the overall structure of the MMM was proposed based on expert views and the statistical analyses. The findings indicated that six fundamental components including leadership, infrastructure, fundamental principles, support, improvement and Excellency constitute the very basis of the maintenance management in each technological organization. And that other components and sub-components emanate from these six components leading to ultimate improvement and Excellency of the organization. Manuscript profile -
Open Access Article
48 - Selecting preventive and maintenance strategy towards the to improve the assessment indexes of dependability and variability‘s criteria
changiz Valmmohamadi Javad Sofiyabadi Fakhrodin Lotf ZadehThe main purpose of this study was to select a preventive and maintenance net strategy to improve the assessment indexes of dependability and variability in a company providing the gas and oil machinery and equipment for oil and gas production. The research method was a MoreThe main purpose of this study was to select a preventive and maintenance net strategy to improve the assessment indexes of dependability and variability in a company providing the gas and oil machinery and equipment for oil and gas production. The research method was an applied and experimental one. To gather the data, the standard daily visit, the cause and effect analysis of using lathe damages of nine machine system during the two study phases were investigated. The research hypotheses, after confirming the normality of the data, were analyzed through mean hypothesis of one population, paired T- test, and between group correlation coefficient. In the first phase, the inclusive net strategy based on mean time for maintenance and net based on dependability were administered. In the second phase the combined net strategy was administered. In both phases the mean time indexes between failure and repair were assessed to see the effects of three compared strategies and the best net strategy was chosen. The results showed that the combined net strategy produced the improvement of the assessment indexes of dependability and variability and also increased the productivity of machinery and equipments. Manuscript profile -
Open Access Article
49 - Qualitative Study of Factors Affecting the retention of knowledge workers in the university
leila hosseinitabaghdehiHuman resource maintenance is one of the measures and measures of human resource management.The aim of this study was to identify the factors affecting the retention of knowledge workers in IslamicAzad universities of Mazandaran province. This research was a qualitative MoreHuman resource maintenance is one of the measures and measures of human resource management.The aim of this study was to identify the factors affecting the retention of knowledge workers in IslamicAzad universities of Mazandaran province. This research was a qualitative study of inductive contentanalysis with an applied purpose. Its data were collected in 1398 Year using purposive sampling methodfrom snowball to saturation stage and semi-structured interviews with 28 academic experts andspecialists in the field of human resource management. Data analysis was using semantic unit analysisand Delphi technique. After analyzing the data, 22 codes (indicators) were identified in the form of 5concepts or factors including participation, reward system, job design, job significance andindependence of action for retaining knowledge staff in Islamic Azad universities of Mazandaranprovince. The results of this research can help managers in creating a suitable and attractive workenvironment in order to gain opportunities for growth and development and increase the participationof knowledge employees in value creation and creating a competitive advantage. Manuscript profile -
Open Access Article
50 - The maintenance or shift of local languages in Iran?
esmaeil safaei asl yousef aramThis paper has strived to study the factors involved in the maintenance or shift of local languages in Iran. From among these factors, ‘language attitudes’ and ‘language choice’ have been discussed, for these two interrelated factors, due to thei MoreThis paper has strived to study the factors involved in the maintenance or shift of local languages in Iran. From among these factors, ‘language attitudes’ and ‘language choice’ have been discussed, for these two interrelated factors, due to their flexibility nature, seem to be the direct side-effects of the other involved factors. In other words, speakers’ positive or negative attitudes toward their native language and consequently choosing or not choosing their language in needed situations depend on the orientation of the factors involved in the maintenance or shift of that language. Hence, in the present paper, language attitudes and language choice have been separately discussed and following the language choice discussion, the phenomena of language maintenance and shift have been raised. In the following, some of the studies conducted in the field of local languages’ maintenance and shift, both in and out of Iran, have been cited considering the involvement of language attitudes, language choice, and the other involved factors. In the final section, following the conclusion attained from the discussions in the previous sections, the gradual process of the loss of local languages in Iran due to the involvement of some factors and specifically the involvement of Islamic Republic of Iran Broadcasting (IRIB) Corporation and Ministry of Education has been warned. Manuscript profile -
Open Access Article
51 - Designing an Improved Stochastic Planning Model for Supply Chain Considering Maintenance and Operations (MRO) in Rahiab Sanat Sepahan Engineering Technical Company
Sayyed Mohammad Reza Davoodi Amir Hortamani Nafiseh Bakhtiary Dastgerdi -
Open Access Article
52 - Investigating Predictive Maintenance Strategies for CNC Machine Tools in the Industry 4.0 Era
Fionn FoleyThis research compares different approaches for achieving precise predictive maintenance (PdM) results from CNC machine tools. For smaller enterprises, it is crucial to be able to upgrade their existing industrial machines with industry 4.0 systems, as the global market MoreThis research compares different approaches for achieving precise predictive maintenance (PdM) results from CNC machine tools. For smaller enterprises, it is crucial to be able to upgrade their existing industrial machines with industry 4.0 systems, as the global marketplace becomes more competitive. The evolution of the Internet of Things (IoT) and the creation of cyber-physical systems (CPS) in the industry has enabled big data generation. New maintenance methodologies have emerged where decisions are driven by mathematical models and data analysis. In this study, a low-cost strategy is used as a baseline to establish system accuracy. Results are then compared to a more comprehensive strategy outlining the potentials of these retrofit predictive maintenance (PdM) systems. Numerous data modeling techniques were employed to increase system accuracy while focusing on the remaining useful life (RUL) of the cutting tool. Through analysis of the selected strategies favorable correlation is evident between predicted results and physical tool wear, optimal accuracy of 95.68% is achieved by utilizing hybrid data modeling techniques. The study highlights the possibilities for enterprises looking to adopt PdM strategies and consequently capitalize on the potential of Industry 4.0. Manuscript profile -
Open Access Article
53 - Analyze the Effect of the Maintenance Activities on the Internet Sustainability by Using 2k Factorial Experiment Design
Ali Karevan -
Open Access Article
54 - Designing a New Model for Evaluating the Maintenance System
Abolfazl Sherafat Sayyed Mohammad Reza Davoodi -
Open Access Article
55 - The effect of capital structure and operating cycles on the relationship between comparability of financial statements and holding cash
Mohammadreza Mehrabanpour Farzin Rezaei Maryam Moradi Leila MoradiIncreasing the comparability of financial statements leads to lower agency costs and the need to keep cash. In this regard, the aim of this study was to investigate the relationship between comparability of financial statements and cash retention and the effect of capit MoreIncreasing the comparability of financial statements leads to lower agency costs and the need to keep cash. In this regard, the aim of this study was to investigate the relationship between comparability of financial statements and cash retention and the effect of capital structure and operational cycles on the relationship between comparability of financial statements and retention of cash. To achieve the objectives of the study, the data of companies listed on the Tehran Stock Exchange in the period 2014 to 2018 were tested using multiple linear regressions using panel data. The findings show that increasing the comparability of financial statements significantly reduces the retention of corporate cash. Evidence also suggests that there is no significant effect of capital structure and operational cycles on the relationship between the comparability of financial statements and the retention of cash. The results show that investors and creditors in their economic decisions rely on the financial statements of companies, so it is worthwhile to standardize and monitor institutions as well as the company's governing bodies. . They attach special importance to the ability to compare financial information. Manuscript profile -
Open Access Article
56 - Improve of Human Reliability by Identifying and Evaluating Potential and Actual Roots of Maintenance Team Errors in the Power Transmission Grids
Mehdi Tavakoli Mehdi NafarHuman life and the economy of a country are becoming more and more dependent on electricity. However, events that occur due to various factors in the power grids, affect the quality of electrical energy delivered to subscribers. The human error of maintenance teams is o MoreHuman life and the economy of a country are becoming more and more dependent on electricity. However, events that occur due to various factors in the power grids, affect the quality of electrical energy delivered to subscribers. The human error of maintenance teams is one of the most important causes of automatic outputs of electrical equipment. Human error, in addition to the economic consequences of not transiting electrical energy due to equipment outages, may also cause health damage to personnel. The purpose of this study is to propose a method for analyzing the human reliability of maintenance teams in power transmission grids, which has been implemented as a case study on power transmission grids teams in Fars. The first step is to identify the roots of human error. So far, no comprehensive studies have been conducted on the root causes of human error in power transmission grids. Therefore, in this article, the actual and potential roots of various aspects such as organization, individual moods, supervision, etc. are identified and predicted in the framework of the method of human factors analysis and classification system. Then, a method is proposed to estimate the probability of the root event to use its results to prioritize the necessary control and corrective measures to reduce human error. Manuscript profile -
Open Access Article
57 - Optimal Maintenance Algorithm for Distribution Network in Presence of Incentive Regulation
Iman Khonakdar Tarsi Mahmud Fotuhi Firuzabad Hosein Mohammadnezhad-Shourkaei Mehdi EhsanDue to the complexity of distribution networks, preventive maintenance is very important. Incentive regulation is also one of the factors influencing the performance of distribution companies, which in turn complicates maintenance planning. This paper addresses the issu MoreDue to the complexity of distribution networks, preventive maintenance is very important. Incentive regulation is also one of the factors influencing the performance of distribution companies, which in turn complicates maintenance planning. This paper addresses the issue of preventive maintenance planning to enhance reliability in the presence of reward and penalty as a motivational factor. Therefore, the profit function of the distribution company, which includes the cost of repairs and reward-penalty, is optimized. In the incentive model for measuring the performance, reliability indices are compared by feeders, and in contrast, the repair program is obtained for each feeder separately. Due to the different causes of feeder failure such as their structural properties and weather conditions, increasing the accuracy of performance comparison from companies to feeders, in addition to penalties and rewards assigning leads to maximise the impact of maintenance at the level of their reliability and is accompanied by cost savings. For this purpose, the information of a real network including 194 feeders is considered as primary data. After categorizing the feeders and calculating penalties and rewards, the profit from the provision of services are optimized by BPSO method. As a result, the preventive maintenance program is obtained separately for feeders for three general categories of frequent failures, which includes substation failure, line failure and tree branch collision in a period of 5 years. The optimization results show that the proposed method, while maximizing the profits of distribution companies, also improves their performance in terms of reliability. Manuscript profile -
Open Access Article
58 - A Novel Inconsistency Prevention Approach to Dynamic Updating of Web Applications
Seyed Habib Seifzadeh Hasan Abolhasani Mohsen Sedighi MeshkenaniSoftware update requires that running program is stopped, patched and then restarted from start. This cycle mainly causes disruptions to the programs' execution which may be undesirable. Disruptions could turn out to be more problematic in the web applications, because MoreSoftware update requires that running program is stopped, patched and then restarted from start. This cycle mainly causes disruptions to the programs' execution which may be undesirable. Disruptions could turn out to be more problematic in the web applications, because they usually have to provide round-the-clock services. Nowadays, there are systems called Dynamic Updating Systems which are able to update programs without disruption. However, a dynamic updating system capable of updating web applications is infrequent to date. The present study aims to propose approaches needed to compose a web-based dynamic updating system. Providing these approaches, we have focused on preserving programs' consistency. To this end, different states of a web application are considered, and actions which the dynamic updating system must perform in each state are described. This paper concludes with a discussion about the implementation and the evaluation of the proposed approaches. Manuscript profile -
Open Access Article
59 - Estimation of Nitrogen Requirements of Holstein Suckling Calves at Different Ages
ح. رحمانی A. Moharrery M.J. Zamiri -
Open Access Article
60 - اثر گروه ژنتیکی، فصل، اثر متقابل آنها، دما، رطوبت و شاخص دما-رطوبت بر رفتار نگهداری گاوهای نر داشتی
ت. کوماری اس. پان ر.ک. چودهاریگاوهای نر داشتی نقش مهمی در توسعه دامپروری دارند. آگاهی دقیق از رفتار نگهداری گاوهای نر داشتی در مدیریت بهتر شرایط در مزارع پرورشی برای پشتیبانی از تقاضای صنعت تلقیح مصنوعی (AI) امری ضروری است. بدین منظور یک مطالعه مقایسه­ای روی گاوهای نر داشتی با هدف ارزیابی اثر گر Moreگاوهای نر داشتی نقش مهمی در توسعه دامپروری دارند. آگاهی دقیق از رفتار نگهداری گاوهای نر داشتی در مدیریت بهتر شرایط در مزارع پرورشی برای پشتیبانی از تقاضای صنعت تلقیح مصنوعی (AI) امری ضروری است. بدین منظور یک مطالعه مقایسه­ای روی گاوهای نر داشتی با هدف ارزیابی اثر گروه ژنتیکی، فصل، اثر متقابل گروه ژنتیکی × فصل، دما، رطوبت و شاخص دما - رطوبت (THI) روی رفتار نگهداری صورت گرفت. 25 گاو نر داشتی (5 گاو به ازای هر گروه ژنتیکی) در دو فصل (زمستان و تابستان) که در ایستگاه انجماد اسپرم نادیا، هارینگاتا (بنگال غربی)، هندوستان نگهداری می­شدند، برای این مطالعه انتخاب گردیدند. تأثیر گروه ژنتیکی بر خوردن (05/0>P)، نشستن (01/0>P)، دراز کشیدن (01/0>P) و زمان خوابیدن (01/0>P)، تأثیر فصل بر نشخوار (05/0>P) و زمان نشستن (01/0>P)، تأثیر اثر متقابل گروه ژنتیکی × فصل بر دراز کشیدن (01/0>P) و زمان خوابیدن (01/0>P)، تأثیر دمای هوا بر آشامیدن (05/0>P) و زمان خوابیدن (05/0>P)، تأثیر رطوبت بر خوردن (01/0>P)، نشخوار (01/0>P)، نشستن (01/0>P) و زمان دراز کشیدن (01/0>P) و تأثیر THI بر زمان خوردن (05/0>P) و آشامیدن (05/0>P) معنی­دار بود. گروه ژنتیکی، فصل، اثر متقابل گروه ژنتیکی × فصل، دما، رطوبت و شاخص دما-رطوبت تأثیری بر زمان ایستادن نداشتند. گروه­های ژنتیکی مختلف پاسخ­های متفاوتی در بیان زیرمؤلفه­های مختلف رفتارهای نگهداری در دو فصل­­ مزبور داشتند. Manuscript profile -
Open Access Article
61 - Presenting a multi-objective mathematical model integrating production scheduling and maintenance considering the limited access to production resources in conditions of uncertainty and optimization with multi-objective genetic algorithm
محمد شریف زادگان محمدرضا حیدری کورش پوری عادل پورقادر چوبر میلاد ابوالقاسمیانIn production and industrial systems, the integrated planning of production and operations is very important. Responding quickly to the needs of customers, diversity, reliability and cost of equipment and machines, due to the extensive limitations in production resource MoreIn production and industrial systems, the integrated planning of production and operations is very important. Responding quickly to the needs of customers, diversity, reliability and cost of equipment and machines, due to the extensive limitations in production resources, competitiveness and gaining market share in conditions of uncertainty, there is a need to plan the units. be done in an integrated manner. In most of the production units, effective information is at an unfavorable level of coordination and exchange with other activities. The result of such activities is nothing but a waste of resources and the emergence of an insular culture in the organization. Therefore, in this research, a MIP mathematical model was modeled in line with the planning of production, maintenance in Maron Company. The objectives of the proposed model are to minimize production costs and maintenance costs with limited production resources. dependents such as maintenance) was used by the innovative method of genetics. The results of the modeling evaluation showed that the detailed and ultra-innovative solution provided has improved the company's production by more than 7%. Manuscript profile -
Open Access Article
62 - Camel; sedation, induction and maintenance of anesthesia; A review article
Abolfazl Barzegar Bafrouei Moosa JavdaniAbstract Anesthetics are used for a variety of reasons, such as to minimize or eliminate pain, relax muscles and even to facilitate clinical examination and diagnostic procedures. like other ruminants in camels, most of the surgical interventions are performed with loc MoreAbstract Anesthetics are used for a variety of reasons, such as to minimize or eliminate pain, relax muscles and even to facilitate clinical examination and diagnostic procedures. like other ruminants in camels, most of the surgical interventions are performed with local anesthesia and sedative. Different anesthetic regimens in practice for other animals also hold true in the camel..the most common drugs used for premedication/ sedation in camels were xylazine, romifidine, detomidine, medetomidine, tramadol and butorphanol. For induction and maintenance of anaesthesia, the following drugs were used most commonly: propofol, ketamine, xylazine- ketamine, ketamine-romifidine-diazepam, medetomidine-ketamine, propofol-xylazine, propofol-xylazine-diazepam, tramadol-xylazine, medetomidine-ketamine, medetomidine-ketamine-butorphanol and midazolam-propofol. The drugs used to reverse the effects of analgesia were atipamezole and natrelexone. The objectives of this article were to review all scientific data regarding anaesthetic drugs and anaesthetic protocols used for pre-medication, sedation, induction and maintenance of anaesthesia in camels (Camelus dromedarius) in the field was published 2008-2015.The effective doses and reported side effects were discussed. Manuscript profile -
Open Access Article
63 - A study of the ifissues and problems of the exploitation of the irrigation and drainage networks and significance of people’s participation( Case study: Ardak dam basin )
alireza bani vaheb esmat mazlomTo provide the food necessities have been a major priority of government projects through recent decades. So, development of agriculture has been considered as a pivot. The lack of water resources because of rising the demand in agriculture, industry, drinking water an MoreTo provide the food necessities have been a major priority of government projects through recent decades. So, development of agriculture has been considered as a pivot. The lack of water resources because of rising the demand in agriculture, industry, drinking water and environment (as a result of growing population) has brought up the maximum utilization of existing water resources and the improvement of exploitation and production. In country such as Iran, which water contains a limit potential, the development of agriculture is dependent to it. Thus the existing utilized water and the utilizable one do not meet agriculture development process and growing population’s food. So management of optimum utilization of water along with demand management are important factors to make possible the firm development in economy and agriculture. Leaving the management of systems to private sector or utilizers and their participations are of the proper policies. Manuscript profile -
Open Access Article
64 - مقایسه پتانسیل بومی سازی گیاه Dracaena Sanderiana ‘Victory’ در محیط های نوری مختلف
Chalinda Beneragama G.D.K. Kumaraاین مطالعه با هدف بررسی توانایی گیاه Dracaena sanderiana ‘Victory’که یک گیاه برگ زینتی با اهمیت تجاری در بازارهای محلی و بین­المللی است، در محیط­های نوری مختلف و در یک گلخانه نیمه باز در پرادینا (سریلانکا) انجام شد. گیاهان هم­اندازه و هم­سن ک Moreاین مطالعه با هدف بررسی توانایی گیاه Dracaena sanderiana ‘Victory’که یک گیاه برگ زینتی با اهمیت تجاری در بازارهای محلی و بین­المللی است، در محیط­های نوری مختلف و در یک گلخانه نیمه باز در پرادینا (سریلانکا) انجام شد. گیاهان هم­اندازه و هم­سن که آماده صادرات بودند در گلدان پلاستیکی پر شده با بستر کاشت استاندارد که به­وسیله گروه کشاورزی توصیه شده بود، پرورش داده شدند. گیاهان در معرض 4 تیمار نوری مختلف قرار گرفتند: نور کامل، 15 درصد سایه زیر توری سبز رنگ، 50 و 80 درصد سایه زیر توری مشکی. پارامترهای مورفولوژی و مرتبط با رشد اندازه­گیری شدند و ارزیابی زیبایی آن جهت تایید تناسب کلی گیاهان تا روز صدم و به فاصله بیست روز انجام شد. این رقم به شرایط نوری مختلف واکنش­های متفاوت نشان داد و صفات مربوط به برگ به شکل معنی­داری تغییر یافتند، در حالی­که سرعت رشد نسبی در همه محیط­ها یکنواخت بود. نسبت­های وزنی که از طریق ماده خشک اندازه­گیری می­شدند، تغییر یافتند، در حالی که سرعت رشد نسبی در همه محیط­ها یکنواخت بود. نسبت­های وزنی که از طریق ماده خشک اندازه­گیری می­شدند، تغییر نیافت. بیشتر پاسخ­ها زیر توری مشکی (50 درصد سایه) با توری سبز (15 درصد سایه) که نسبت R/FR آن کاهش یافته بود، قابل مقایسه بود. دریافتیم که رقم ’ویکتوری‘ می­تواند به­راحتی با شرایط نوری این مطالعه، بومی شود. نکته جالب اینکه این رقم در این شرایط نوری نمره بالای 80 درصد زیباشناسی را بدست آورد که حاکی از پتانسیل استفاده از این رقم در شرایط نوری مختلف است به گونه­ای که زیبایی ظاهری آن تغییری نکند. Manuscript profile -
Open Access Article
65 - خصوصیات کیفی و انحصاری گیاه بومی ایران (Agropyron cristatum (L.) Gaertner.) به عنوان چمن
حسن بیات حسین نعمتی علی تهرانی فر علی قزنچیانگیاهی است که پتانسیل )Agropyron cristatum (L.) Gaertner.( اگروپیرونتبدیل شدن به چمن کم هزینه و استفاده در مناطق کم آب را دارد. هدف اصلی اینتحقیق بررسی خصوصیات کیفی چمنی 24 نمونه اگروپیرون، جمع آوری شده از مناطقمختلف ایران، برای استفاده به عنوان چمن کم هزینه بود. آزمایش Moreگیاهی است که پتانسیل )Agropyron cristatum (L.) Gaertner.( اگروپیرونتبدیل شدن به چمن کم هزینه و استفاده در مناطق کم آب را دارد. هدف اصلی اینتحقیق بررسی خصوصیات کیفی چمنی 24 نمونه اگروپیرون، جمع آوری شده از مناطقمختلف ایران، برای استفاده به عنوان چمن کم هزینه بود. آزمایش در قالب طرحکامال تصادفی با 3 تکرار انجام شد.. نتایج نشان داد که تنوع معنی داری بین نمونهها در صفات کیفی چمنی و اجزای آن وجود دارد و میانگین کیفیت چمنی 15 نمونه 6یا بالاتر بود که بیانگر عملکرد کیفی چمنی مطلوب است. کیفیت سرزنی برای همه4049 ( متغیر بود. عملکرد ( 7/ تا 28 )M(210( 6/ نمونه ها بالاتر از 6 بود و بین 30مناطق جمع آوری بذور برای همه صفات مورد بررسی متنوع و متفاوت بود و مناطقمختلف جغرافیایی ایران پتانسیل معرفی ژنوتیپ های با کیفیت چمنی مطلوب را)r = داشتند. همبستگی مثبت معنی داری بین کیفیت چمنی و کیفیت سرزنی )** 71وجود داشت. بر اساس نتایج حاصل از )r = و بین کیفیت چمنی و پنجه زنی )** 57تجزیه خوشه ای، نمونه ها در 3 گروه دسته بندی شدند و تک نمونه خوشه 2 بالاترین7( را / 7( و بافت برگ ) 10 / 7(، رنگ ) 27 / 7(، کیفیت سرزنی ) 28 / کیفیت چمنی ) 95داشت. این نتایج نشان می دهد که نمونه های بومی اگروپیرون ایران می توانندذخیره مهمی برای استفاده به عنوان چمن کم هزینه باشند. Manuscript profile -
Open Access Article
66 - Identifying and prioritizing factors affecting the maintenance of human resources of Islamic Azad University (Case of study: North Tehran branch)
مریم ادیب زاده حسین مهدی رکن آبادیAbstractBackground and purpose: The effort of every successful organization is to preserve and maintain efficient human resources, and it is important for every organization to know the effectiveness factors that cause this. Therefore, the purpose of this research is to MoreAbstractBackground and purpose: The effort of every successful organization is to preserve and maintain efficient human resources, and it is important for every organization to know the effectiveness factors that cause this. Therefore, the purpose of this research is to identify and prioritize the factors affecting the maintenance of human resources of Islamic Azad University, North Tehran branch in 1401.Research method: The present study was a mixed exploratory study. First, categories were identified using thematic analysis and interviews with 9 academic and organizational experts until theoretical saturation. In the quantitative part, 144 university employees responded to the questionnaires as a sample size, and structural equation modeling was used to analyze the data.Findings: After identifying 181 open codes, by categorizing and centering around the most important category, 53 secondary factors and 5 main factors were identified. 5 factors affecting the retention of human resources include job satisfaction, optimal management of human resources, organizational support, organizational atmosphere and efficient selection.Conclusion: In order to preserve and maintain human resources, it is necessary to pay attention to its effective factors by university managers and try to institutionalize them. Manuscript profile -
Open Access Article
67 - The effect of sustainable human resource management on the maintenance of human resources and the mediating role of social capital
hossein hamzavi atefe mohebi, AbdulWase khademi Behrouz Rezaei ManeshAbstract Background and purpose: Today, the maintenance of human resources in hospitals is very important due to improving the quality of healthcare services, increasing the trust of patients, maintaining knowledge and saving financial costs. The purpose of this researc MoreAbstract Background and purpose: Today, the maintenance of human resources in hospitals is very important due to improving the quality of healthcare services, increasing the trust of patients, maintaining knowledge and saving financial costs. The purpose of this research is to investigate the effect of sustainable human resource management on the maintenance of human resources and the mediating role of social capital.Research method: This research is applied in terms of purpose and descriptive-survey approach. The statistical population includes all the employees of Salman Farsi Bushehr Hospital in the number of 353 people and the statistical sample size based on the Cochran sample estimation formula is 184 employees. Structural equation modeling method was used to analyze the data.Findings: The findings showed that sustainable human resources management have a significant effect on the maintenance of human resources with a coefficient of 0.60, sustainable human resources management on social capital with a coefficient of 0.42, and social capital on the maintenance of human resources with a coefficient of 0.44. Sustainable human resources management have a significant effect on the maintenance of human resources with the mediating role of social capital.Conclusion: Hospital managers of the country can contribute to the longevity of employees by focusing on sustainable human resource management and promoting social capital. Manuscript profile -
Open Access Article
68 - A dynamic approach for maintenance evaluation and optimization of multistate system
Zakaria Dahia Ahmed Bellaouar Jean-Paul Dron -
Open Access Article
69 - Aircraft routing problem considering various maintenance operation factors: A literature review
Masoumeh Mirjafari Alireza Rashidi Komijan Ahmad Shoja -
Open Access Article
70 - Availability analysis of mechanical systems with condition-based maintenance using semi-Markov and evaluation of optimal condition monitoring interval
Girish Kumar Vipul Jain O. P. Gandhi -
Open Access Article
71 - Development of system decision support tools for behavioral trends monitoring of machinery maintenance in a competitive environment
Michael Kanisuru Adeyeri Khumbulani Mpofu -
Open Access Article
72 - Optimizing the preventive maintenance scheduling by genetic algorithm based on cost and reliability in National Iranian Drilling Company
Habibollah Javanmard Abd al-Wahhab Koraeizadeh -
Open Access Article
73 - Development of hardware system using temperature and vibration maintenance models integration concepts for conventional machines monitoring: a case study
Michael Kanisuru Adeyeri Khumbulani Mpofu Buliaminu Kareem -
Open Access Article
74 - A maintenance system model for optimal reconfigurable vibrating screen management
O. A. Makinde K. Mpofu B. I. Ramatsetse M. K. Adeyeri S. P. Ayodeji -
Open Access Article
75 - Assessment of distance-based multi-attribute group decision-making methods from a maintenance strategy perspective
Siew-Hong Ding Shahrul Kamaruddin -
Open Access Article
76 - Periodic flexible maintenance planning in a single-machine production environment
Mehdi Iranpoor S. M. T. Fatemi Ghomi -
Open Access Article
77 - JIT single machine scheduling problem with periodic preventive maintenance
Mohammadreza Shahriari Naghi Shoja Amir Ebrahimi Zade Sasan Barak Mani Sharifi -
Open Access Article
78 - Building a maintenance policy through a multi-criterion decision-making model
Elahe Faghihinia Naser Mollaverdi -
Open Access Article
79 - Money-back guarantee warranty policy with preventive maintenance strategy for sensor-embedded remanufactured products
Ammar Y. Alqahtani Surendra M. Gupta -
Open Access Article
80 - Adaptive policy of buffer allocation and preventive maintenance actions in unreliable production lines
Paolo Renna -
Open Access Article
81 - An enhanced reliability-oriented workforce planning model for process industry using combined fuzzy goal programming and differential evolution approach
D. E. Ighravwe S. A. Oke K. A . Adebiyi -
Open Access Article
82 - Development of simulation model for performance evaluation of feed water system in a typical thermal power plant
S Gupta P.C Tewari A.K Sharma -
Open Access Article
83 - Multi-factor failure mode critically analysis using TOPSIS
a Sachdeva D Kumar P Kumar -
Open Access Article
84 - Performance evaluation and availability analysis of ammonia synthesis unit in a fertilizer plant
S Kumar P.C Tewari Sunand Kumar -
Open Access Article
85 - An application of artificial neural network to maintenance management
V. O. Oladokun O. E. Charles-Owaba C. S. Nwaouzru -
Open Access Article
86 - Maintenance management decision model for preventive maintenance strategy on production equipment
R Ahmad S Kamaruddin I Azid I Almanar -
Open Access Article
87 - Steady state behavior and maintenance planning of bleaching system in a paper plant
R Khanduja P.C Tewari D Kumar -
Open Access Article
88 - A new approach for constraining failure probability of a critical deteriorating system Yard crane scheduling in port container terminals using genetic algorithm
H Babaei K Shahanaghi A Bakhsha -
Open Access Article
89 - Technical Note: An opportunity cost maintenance scheduling framework for a fleet of ships: A case study
O.E Charles-Owaba A.E Oluleye F.A Oyawale S.K Oke -
Open Access Article
90 - Monitoring Process Of The Re-construction Of An Ancient Structure: The Baluarte Do Cavaleiro
Jorge Pinto Humberto Varum João Guedes Anibal Costa -
Open Access Article
91 - Identifying factors affecting the retention of creative employees in Iran's banking industry (case study: Refah Kargaran Bank of Kohgilouye and Boyer Ahmad provinces)
Gholamali Rezapour Mahdi Bagheri Parvaneh Gelardهدف پژوهش حاضر، شناسایی عوامل مؤثر بر نگهداشت کارکنان خلاق در صنعت بانکداری ایران (مورد مطالعه بانک رفاه کارگران استان کهگیلویه و بویراحمد) است.در روش تحقیق از رویکرد تحقیقات ترکیبی (کیفی-کمّی) از نوع متوالی-اکتشافی استفاده شده است. جامعه آماری در بخش کیفی شامل خبرگان ( Moreهدف پژوهش حاضر، شناسایی عوامل مؤثر بر نگهداشت کارکنان خلاق در صنعت بانکداری ایران (مورد مطالعه بانک رفاه کارگران استان کهگیلویه و بویراحمد) است.در روش تحقیق از رویکرد تحقیقات ترکیبی (کیفی-کمّی) از نوع متوالی-اکتشافی استفاده شده است. جامعه آماری در بخش کیفی شامل خبرگان (مدیران شعب بانک رفاه و اساتید عضو هیات علمی در رشته مدیریت) می‎باشند. روش نمونه‏گیری ،در بخش کیفی از نوع هدفمند با استفاده از تکنیک گلوله برفی و با توجه به شاخص اشباع نظری انجام شد و شامل کارشناسان مدیران شعب بانک رفاه و اعضای هیات علمی متخصص می‎باشد در بخش کمی نیز جامعه آماری عبارتند از کلیه مدیران، معاونان و کارکنان شعب بانک رفاه در استان کهگیلویه و بویر احمد می باشند. تعداد کارکنان و مدیران جمعا 120 نفر می باشد در بخش کمی نیز روش نمونه گیری بصـــورت تصادفی طبقه ای متناســـب با حجم جامعه آماری می­باشد و 100 نفر به عنوان نمونه آماری انتخاب شدند برای جمع آوری داده های مربوط به الگوی نگهداشت کارکنان خلاق از پرسشنامه محقق ساخته 67 سوالی استفاده گردید. با توجه به مطالعه گسترده و نبود ابزار استاندارد جهت سنجش، محقق بعد از مطالعه نظریات و انجام مصاحبه نیمه ساختار یافته به ساخت پرسشنامه با استفاده از روش تحلیل عاملی پرداخته است. جهت تجزیه و تحلیل داده های کیفی پژوهش از روش تحلیل محتوا استفاده شد جهت تجزیه و تحلیل داده های کمی پژوهش از نرم افزار Spss و pls در دو سطح آمار توصیفی و استنباطی استفاده شد. در نهایت با استفاده از آزمون مدل سازی معادلات ساختاری، داده های پژوهش، به منظور برازندگی مدل مفهومی پژوهش مورد سنجش قرار گرفت. یافته­های پژوهش نشان داد برای نگهداشت کارکنان اخلاق، در صنعت بانکداری، 67 شاخص بااهمیت وجود دارند که می‏باید مورد توجه قرار گیرند، این 67 شاخص در 13 مؤلفه و این 13 مؤلفه در 4 دسته عامل کلی، عوامل مدیریت و رهبری، انگیزشی، سازمانی و فردی جای گرفته‏اند. همچنین در بخش رتبه بندی عوامل مشخص شده است که عوامل مدیریت و رهبری در رتبه نخست اهمیت قرار گرفته است. Manuscript profile -
Open Access Article
92 - The Effect of Methadone Maintenance Treatment (MMT) on the Mental Health of Opium and Heroin Addicts
Zahra Arefnasab Changiz Rahimi Nourolah Mohammadi A. Reza Baba MahmoudiThis study examined the effects of Methadone Maintenance Treatment (MMT) on the mental health of opium and heroin addicts. Participants included 60 Iranian heroin and opium addicts (equal sample size from each group) whose age ranged from 18 to 45 years. In the pretest MoreThis study examined the effects of Methadone Maintenance Treatment (MMT) on the mental health of opium and heroin addicts. Participants included 60 Iranian heroin and opium addicts (equal sample size from each group) whose age ranged from 18 to 45 years. In the pretest stage, the participants’ mental health was assessed using the General Health Questionnaire (GHQ; Goldberg, 1972). Then, for six months, participants received MMT and their mental health was assessed once a month using GHQ. The results of repeated measures and t-test showed an improvement in the mental health of participants. This improvement began from the first month of treatment and continued over the six month period of treatment. Manuscript profile -
Open Access Article
93 - A Structural Model of Relationship between Self- Efficacy in Romantic Relationships and Marital Satisfaction: The Mediating Role of Relationship Maintenance Behaviours
Gholamreza Rajabi Farzaneh Rashidi Manocher TaghipourThis study aimed to determine fitness of the structural model of the relationship between self-efficacy in romantic relationship and marital satisfaction with regard to the mediating role of relationship maintenance behaviors. The research design was correlational study MoreThis study aimed to determine fitness of the structural model of the relationship between self-efficacy in romantic relationship and marital satisfaction with regard to the mediating role of relationship maintenance behaviors. The research design was correlational study-structural equation modeling. 200 married-female teachers among elementary schools were selected using multi-stage random sampling method from regions 1 and 3 of Ahvaz city, and responded to the Self-efficacy in Romantic Relationships Scale (Riggio, Weiser, Valenzuela, Lui, Montes, & Heuer, 2011) Relational Maintenance Strategy Measure (Canary, & Stafford, 1992), and Marital Satisfaction Scale (Rajabi, 2010). The data were analyzed using structural equations modeling. The results showed that all of the model fitness indices were appropriate. The path coefficients of self-efficacy in romantic relationship to relationship maintenance strategies and the relationship maintenance strategies to marital satisfaction were significant. But the path of self-efficacy in romantic relationship to marital satisfaction was not significant. Also, relationship maintenance strategies had a mediation role in the relationship between self-efficacy in romantic relationship and marital satisfaction. Based on the findings of this study, it seems that people who have high self-efficacy in romantic relationship due to the use of relationship maintenance strategies experience more marital satisfaction Manuscript profile -
Open Access Article
94 - Presenting Comprehensive Algorithm for Long Term Scheduling of Preventive Maintenance in the Electric Transmission Networks
Niki Moslemi Mostafa Kazami Seyyed Mostafa Abedi Hadi Khatibzadeh Mohamad Jafarian Saeed Salimi -
Open Access Article
95 - The Effect of Ownership Management on the Ratio of Short and Long Term Debts
rahmatollah azad Yaser Rastegari radAbstractThe aim of this study was to model the complications of the system of conservation, maintenance and training of human resources through the research method of mixed exploratory model. Its statistical population in the quality department, a group of experts inclu MoreAbstractThe aim of this study was to model the complications of the system of conservation, maintenance and training of human resources through the research method of mixed exploratory model. Its statistical population in the quality department, a group of experts including senior managers of the National Iranian Oil Refining and Distribution Company and professors in the field of human resource management in higher education centers and in the quantitative department of the National Petroleum Products Distribution Company - Sari and Affairs Iran Oil Pipelines and Telecommunications - Northern Region, there were 835 people (789 men and 46 women). In the qualitative part of the snowball sampling method, 20 people and in the quantitative part with the relative class sampling method based on Cochran's formula, 263 people were selected as a statistical sample. Data in the qualitative part were extracted through the implementation of Delphi technique with a semi-structured questionnaire and in the quantitative part through the implementation of 120-item researcher-made questionnaires on a statistical sample and analyzed using SPSS and AMOS software. The validity of the questionnaires was confirmed in terms of content and structure. Reliability and combined reliability were estimated and confirmed by Cronbach's alpha coefficient with 84%. Descriptive statistics (mean, variance, standard deviation) and inferential statistics (exploratory and confirmatory factor analysis and Friedman test) were used to analyze the data. The results showed that modeling the complications of the system of conservation, maintenance and training of human resources has 6 dimensions (organizational (internal), environmental (external), occupational, individual (personal), governmental (political) and cultural-social) and 30 It has been a component. The results of the quantitative section showed that all dimensions of the research model were confirmed. Manuscript profile -
Open Access Article
96 - The effectiveness of Schema Therapy on Tendency to Drugs and Regulation Affection in Men Undergoing Methadone Maintenance Treatment
Tamara Mirabi Fariba Hassani Fatemeh golshani Farnaz Keshavarzi ArshadiIntroduction: The aim of this study was the effectiveness of schema therapy on tendency to drugs and Regulation Affection in men undergoing methadone maintenance treatment. Method of the study is an semi experimental by pre-test, post-test and follow-up with a control g MoreIntroduction: The aim of this study was the effectiveness of schema therapy on tendency to drugs and Regulation Affection in men undergoing methadone maintenance treatment. Method of the study is an semi experimental by pre-test, post-test and follow-up with a control group, among the men undergoing methadone maintenance treatment who referred to the Shahid Mellatdoost service-support complex, a sample included 30 men were selected through judgment sampling and finaly divided to 2 groups by randomization (15 men in each group), In the course of study 5 men were excluded from the study and 4 men fell. Thus, 11 men in the unified transdiagnostic of emotional disorders treatment group, and 10 men in the control group. The experimental group was exposed to the intervention of 17 sessions of schema therapy, while the control group was not exposed to such intervention. Addiction potential and positive and negative scale Was used to collect data. Research data with the help of software "Spss, and were analyzed using descriptive statistics and analysis of variance with repeated measures.Findings showed that schema therapy was effective in reducing tendency to drugs and regulate affection at the end of treatment and after two months of follow-up. Schema therapy can be used as an effective treatment with methadone therapy to reduce tendency to drugs and regulate affection. Manuscript profile -
Open Access Article
97 - Determination the mathematical model of repair and maintenance cost of New Holland TM155 and Valtra 8400 tractors in Markazi and Fars Provinces
M. R. Vafaee H. Mashhadi Meighani A. BorgheiCosts of repair and maintenance are most part of the cost of machinery usage. Cost estimation of repair and maintenance of agricultural machinery is very important for replacement and net return of management of machinery. This is an important factor to present a mathem MoreCosts of repair and maintenance are most part of the cost of machinery usage. Cost estimation of repair and maintenance of agricultural machinery is very important for replacement and net return of management of machinery. This is an important factor to present a mathematical model for the cost predication of repair and maintenance. The main goal of research was to present a mathematical model of repair and maintenance cost modern tractors in selected province of Iran. In this case New Holland TM155 and Valtra 8400 tractors were selected in Markazi and Fars provinces. First of all a questionnaire including drivers' information and technical data for the tractors was completed by randomly sampled tractor driver. In this case 100 questionnaires were distributed between users of each type of considered tractors during spring till summer of 2007. Provided data were analyzed by SPSS and Excel soft wares to do statistical analysis and determining appropriate mathematical models. T test was used to mean comparison of tractor’s cost and Z, F and R2 as statistical test and indexes were done to finding appropriate mathematical models. The average annual repair and maintenance costs of New Holland TM155 and Valtra 8400 were calculated 3304 and 3635 Ri/hr respectively. Results showed that the average repair and maintenance costs of Valtra 8400 were significantly higher than New Holland TM155 tractors at 5% confidence level. In this research appropriate mathematical models were offer to estimate repair and maintenance costs of each models. Manuscript profile -
Open Access Article
98 - Applying Concept of Rough Set Theory with Multi-Criteria Decision-Making Methods to Evaluate and Select the Most Appropriate Maintenance Strategy
Mohammad Sabet Motlagh The main purpose of this study is to evaluate different maintenance strategies for machinery and equipment. We attempt to select the most appropriate maintenance strategy for increasing availability and reliability levels of production facilities without a great More The main purpose of this study is to evaluate different maintenance strategies for machinery and equipment. We attempt to select the most appropriate maintenance strategy for increasing availability and reliability levels of production facilities without a great increasing of investment. Since the nature of maintenance strategy selection is a multi-criteria problem, so decision makers to evaluation of criteria and alternatives using of uncertain preferences. Therefore, in this study we will use the concept of Rough set theory that are efficient in such circumstances. In fact, in this study first we will use confirmatory factor analysis to evaluating of research criteria and factors and then we will use the concept of Rough theory to convert preferences of decision makers to interval numbers and Multi-criteria decision-making methods (Rough AHP & Rough Topsis) for evaluating and ranking the maintenance strategies. It is noteworthy that in this paper, TOPSIS method with Rough data has been developed. finally, in order to demonstrate the applicability of the proposed method, we have used it in a case. The results show that using such model can help decision makers to make better decisions in the absence of full information. Manuscript profile -
Open Access Article
99 - RFID-based decision support within maintenance management of urban tunnel systems
Alireza Veiseh Jalal Haghighat monfared -
Open Access Article
100 - Determination of metabolizable energy and daily requirement of forage dry matter in maintenance condition for grazing sheep in siah palas rangeland (Study: Lar National Park)
Hadi Mansouri khah Mohammad Chamani Naser Karimi Ghobad Asgari Jafarabadi Kazem KarimiBeing aware of the animals` food requirement, the amount of available forage in the rangeland and forage quality is necessary as the first step in successful management of animals and rangeland. in this study, Animal unit weight equivalent, maintenance metabolizable ene MoreBeing aware of the animals` food requirement, the amount of available forage in the rangeland and forage quality is necessary as the first step in successful management of animals and rangeland. in this study, Animal unit weight equivalent, maintenance metabolizable energy and daily requirement of grazing sheep were studied. Therefore, determining the weight of various animals` classes grazing in the rangeland and their conversion factor regarding country`s animal unit is an essential issue. In this research, to determine the weight of various classes of Zandi sheep grazing in the Lar National Park rangelands of Siah Palas region in position 35 degrees and 54 minutes north latitude and 32 degrees and 52 minutes east longitude, three prevalent flocks of Zandi race were selected randomly and from each flock, 60 heads of animals including 20 heads of ewe ageing 3 years old, 20 heads of ewe aging 4 years old, 5 heads of ram aging 3 years old, 5 heads of ram aging 4 years old and 10 heads of lamb aging 3 months were signed and selected in two phases, one at the beginning of the season and the other at the end of season. Having utilized the mean weight of ewes aging 3 and 4 years, the weight of the sheep glazing in the studied region was estimated to be equal to 1.59±49.96 kg. Various kinds of forage being glazed by the sheep were identified and collected in this rangeland at the flowering stage on 05/06/2019. The mean percentage of CP, ADF, DMD and ME in every kg of dry forage for 41 plant samples equaled to 4.77±11.18, 39.19±7.89, 56.11±7.83, 7.58±1.26 mega joule, respectively. Daily metabolizable energy for maintenance condition of animal unit equation of this rangeland for 120 ewes, equaled to 10.54 ± 0.35 mega joule in a day and its daily need was estimated to be 1.38±0.04 kg based on the consumed dry material and considering the quality of the forage. Overall, being aware of daily food needs is necessary for the diet of animals. It should be considered in providing managerial designs. Manuscript profile
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